Nail-driving tool



(No Model.)

W. B. BRADY. NAIL DRIVING TOOL.

No. 432,113. Patented July 15, 1890.

UNITED STATES PATENT OFFICE.

\VILLIAM B. BRADY, OF AUSTIN, TEXAS.

NAIL-DRIVING TOOL.

SPECIFICATION forming part of Letters Patent No. 432,113, dated July 15, 1890.

Application filed January 2, 1890. erial No. 385,664:- (No model.)

T0 (1. whom, it may concern.-

Be it known that I, WILLIAM B. BRADY, a citizenof the United States, residing at Austin, in the county of Travis and State of Texas, have invented certain new and useful Improvements in Nail-Driving Tools; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appert-ains to make and use the same.

My invention relates to an improvementi'n magazine nail-driving tools.

It consists, generally speaking, of a spring returning hammer arranged in a suitable shell with a'detachable magazine for holding the nails to be driven and a set of levers operated by the movement of the'hannner-bar to arrest and release the nails at intervals during the operation of the device.

The tool is intended for use more particularlyfor driving shoe-nails into the soles of shoes; butof course I do not wish to have the device limited to this use, as it may be used for many other purposes.

In the drawings illustrating my invention and accompanying this specification, Figure 1 is an elevation of the tool complete with the magazine attached. Fig. 2 is a longitudinal sectional view of the same. Fig. 3 is an elevation of one-half of the shell of the tool. Fig. 4 is a top or plan View of the magazine detached. Fig. 5 is a detail showing the arresting and detaining levers for the nails in normal position and in relation to the shell of the tool and the controlling-spring for said levers. Fig. (3 is a transverse section of the magazine.

Similar reference letters and numerals indicate like parts in all of the figures.

Referring to the drawings, A B are opposite halves of the shell of the tool, either of which is hollowed out to receive the drivingbar, the detachable die-rod, the arresting and detaining levers, and the spring for the latter. lVithin the shell are f ed also slots for the downward movement 0 the nails and a longitudinal groove serving as aguide to a spline secured to the driving-bar.

1 is the slot provided for the detaining and arresting levers 2 3, the latter of which are provided each with flanges at their lower ends, serving as tees to support the nails by their heads. These lovers have a common center of motion or fulcrum in a screw 19, secured in the shell of the tool.

5 is the spring secured at 2a in the shell of the tool, the ends of which bear, respectively, against offsets c and (Z of. the levers 2 3 to hold them in normal position.

11 is the driving-bar of the tool, to which is adjust-ably secured at one end the die-rod 12, and at its opposite end is the head or knob 13, which receives the blow from the hand or a hammer. The driving-bar 11 is notched at 1-t,for a purpose hereinafter to be explained. A coil-sprin l5 encircles the driving-bar 11, and is held between the head or knob 13 and an annular shoulder 6 of the shell A B. The driving-bar 11 is provided with a spline 4, which moves in the longitudinal groove 9 of the shell,servingasa guide. 16 is the magazine for the nails, secured obliquely to the shell of the tool in dovetail grooves 10. The said magazine is provided with an opening 25 to receive the nails, said opening being normally covered by a spring-plate 17, provided with a flange on its free end, against which the thumb or finger is pressed when said opening is to be exposed. The magazine 16 is provided with an enlargement 18, running longitudinally the magazines length, to receive and hold the nails by theirheads as they move downward toward the point in the shell whence they are to be driven. The magazine 16 is closed at its upper end, and is provided with a longitudinal slot, through which may be observed the number of nails contained th erein.

In the shell of the tool, just below the junction of the magazine, is a diaphragm provided with an opening, through which project toes a b of the levers 2 3. At the bottom of the shell of the tool a screw-threaded nipple 20 is formed, over which is seen red a screw-threaded nut 21, which assists in holding the two parts of the shell together, the other means for holding said two parts being with screws h. In order that the magazine may be firmly held to its place against the shell of the tool, I provide a set-screw 1', which runs through an offset of the shell and into the base of the said magazine. To the nut 20 is secured a spring 22, bent at its free end and adapted to pass through an opening f in said nut and project within the bore 7 for the die 19. This spring 22 is intended to hold the nail to be driven until the die reaches it in its downward movement. v

The driving-bar 11 is provided with an antifriction roller 6 to bear upon levers 2 The operation of my tool may be described as follows: The magazine 16 being filled with nails and in position on the shell of the tool, the said nails gravitate downward until arrested by the toe to of the lever 3. The driving-bar being forced against the tension of the spring 15, it releases the lever 2, which, being acted upon by the spring 5, the long arm of said lever drops into the notch 14: of the driving-bar, and the toe Z) is thrown forward to take the first nail from the toe a of lever 3. hen the roller-bearing of the driving-bar reaches the bearing d of the lever 3, said lever is moved to withdraw its toe a and drop the first nail to the toe b. Upon the recoil of the driving-bar lever 2 drops its nail, which finds its way to the end of the small spring 22. Vhen the driving-bar is again brought down quickly, the die 19 forces the nail past the said spring 22, and the levers, as previously described, drop another nail, which finds its way to the said spring 22.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

The combination, with the shell of the tool formed with recesses and a guide-groove, as described, the driving bar provided with notch 14, die 12, and roller 6, spline 4, guided in the groove 9 of the shell, and the returning-spring, of the levers 2 3, having toes a Z), the former of said levers bearing normally upon the roller 6, the spring 5, secured to said shell, bearing by its ends upon the ends of the said levers, and the magazine obliquely attached to the shell, provided with an opening 25 and a spring-closing device 17, as and for the purpose set forth.

In testimony whereof I affix my signature in presence of two witnesses.

\VILLIAM B. BRADY.

\Vitnesses:

' G. M. BRASS,

B. H. SMITH. 

